NORA BRONZE TEST QUESTIONS AND
ANSWERS
the final key adjustment for most oil burners is what? - ANSWER -combustion air
To change the air ratio for different firing rates with an adjustable head burner, what do
we adjust - ANSWER -the position of the drawer assembly in the air tube
one advantage to high static pressure burners is what? - ANSWER -more efficient heat
exchangers (higher efficiency)
All petroleum based products are based chemically on what elements? - ANSWER -
hydrogen and carbon
one gallon of heating oil contains how many BTU's? - ANSWER -140,000
A BTU is a measure of ______. - ANSWER -heat
flash point is what? - ANSWER -lowest temp at which fuel will flash but not continue to
burn
ignition point is what? - ANSWER -lowest temp at which rapid combustion of the fuel will
take place in the air
pour point #2 oil is what? - ANSWER -lowest temp at which oil will flow
as oil gets colder does the viscosity increase or decrease? - ANSWER -increases
water in the bottom of the tank will lead to what two things? - ANSWER -sludge and ice
sludge is a combination of what three things? - ANSWER -water, bacteria, degraded
fuel and other contaminants
sulfur in fuel creates sulfuric acid in condensed flue gasses, what are the three most
common adverse effects on this? - ANSWER -damages the flue liner, eats holes in the
flue pipe, creates scale buildup in the heat exchanger
to insure clean, uncontaminated fuel reaches the oil burner. what three things should we
do? - ANSWER -install tank properly, regularly inspect and fix minor defects before they
lead to major problems, install a quality oil filter
what are the two common types of oil filters? - ANSWER -cartridge, spin-on
, oil filters fail when they become covered and blanketed with what? - ANSWER -
biologically active slime/sludge
the pour point of #2 oil can be lowered by what two methods? - ANSWER -kerosene
and fuel additives
what provides a home for bacterial growth at the bottom of an oil tank - ANSWER -water
where does the bacteria live in an oil tank and what does it do? - ANSWER -lives in
oil/water lines. eats oil and craps acid
what are the 3 basic parts of combustion? - ANSWER -fuel, heat, air
high pressure oil forced through a nozzle does what? - ANSWER -atomizes the oil,
mixes the droplets with air, allows oil to burn
modern flame retention head burner motors operate at what speed - ANSWER -3450
rpm
dirt or lint buildup in the bevel of the burner motor fan blades will cause what? -
ANSWER -reduce the amount of combustion air
what are the two types of burner motors? - ANSWER -split phase and permanent split
capacitor
what are the three basic parts of the fuel pump? - ANSWER -strainer, gear set,
regulating valve
the ignition transformer or igniter is one of the basic needs for what? - ANSWER -
combustion
what are the three most common causes of water i. the oil tank - ANSWER -
condensation, loose or missing vent caps, failing to drain water from tank before
installation
when installing an oil tank what three things should we do? - ANSWER -install an oil
filter, vent alarm and tank gauge. make sure fill and vent lines are pitched back towards
the tank
when should we use compression fittings in an oil line - ANSWER -never
what's the best way to clear a clogged oil line? - ANSWER -push-pull hand pump
what three functions do oil pumps preform? - ANSWER -move oil from tank to burner,
prevent dirt/sludge from clogging pump, remove air when piped as two-line system
ANSWERS
the final key adjustment for most oil burners is what? - ANSWER -combustion air
To change the air ratio for different firing rates with an adjustable head burner, what do
we adjust - ANSWER -the position of the drawer assembly in the air tube
one advantage to high static pressure burners is what? - ANSWER -more efficient heat
exchangers (higher efficiency)
All petroleum based products are based chemically on what elements? - ANSWER -
hydrogen and carbon
one gallon of heating oil contains how many BTU's? - ANSWER -140,000
A BTU is a measure of ______. - ANSWER -heat
flash point is what? - ANSWER -lowest temp at which fuel will flash but not continue to
burn
ignition point is what? - ANSWER -lowest temp at which rapid combustion of the fuel will
take place in the air
pour point #2 oil is what? - ANSWER -lowest temp at which oil will flow
as oil gets colder does the viscosity increase or decrease? - ANSWER -increases
water in the bottom of the tank will lead to what two things? - ANSWER -sludge and ice
sludge is a combination of what three things? - ANSWER -water, bacteria, degraded
fuel and other contaminants
sulfur in fuel creates sulfuric acid in condensed flue gasses, what are the three most
common adverse effects on this? - ANSWER -damages the flue liner, eats holes in the
flue pipe, creates scale buildup in the heat exchanger
to insure clean, uncontaminated fuel reaches the oil burner. what three things should we
do? - ANSWER -install tank properly, regularly inspect and fix minor defects before they
lead to major problems, install a quality oil filter
what are the two common types of oil filters? - ANSWER -cartridge, spin-on
, oil filters fail when they become covered and blanketed with what? - ANSWER -
biologically active slime/sludge
the pour point of #2 oil can be lowered by what two methods? - ANSWER -kerosene
and fuel additives
what provides a home for bacterial growth at the bottom of an oil tank - ANSWER -water
where does the bacteria live in an oil tank and what does it do? - ANSWER -lives in
oil/water lines. eats oil and craps acid
what are the 3 basic parts of combustion? - ANSWER -fuel, heat, air
high pressure oil forced through a nozzle does what? - ANSWER -atomizes the oil,
mixes the droplets with air, allows oil to burn
modern flame retention head burner motors operate at what speed - ANSWER -3450
rpm
dirt or lint buildup in the bevel of the burner motor fan blades will cause what? -
ANSWER -reduce the amount of combustion air
what are the two types of burner motors? - ANSWER -split phase and permanent split
capacitor
what are the three basic parts of the fuel pump? - ANSWER -strainer, gear set,
regulating valve
the ignition transformer or igniter is one of the basic needs for what? - ANSWER -
combustion
what are the three most common causes of water i. the oil tank - ANSWER -
condensation, loose or missing vent caps, failing to drain water from tank before
installation
when installing an oil tank what three things should we do? - ANSWER -install an oil
filter, vent alarm and tank gauge. make sure fill and vent lines are pitched back towards
the tank
when should we use compression fittings in an oil line - ANSWER -never
what's the best way to clear a clogged oil line? - ANSWER -push-pull hand pump
what three functions do oil pumps preform? - ANSWER -move oil from tank to burner,
prevent dirt/sludge from clogging pump, remove air when piped as two-line system
